根据《危险性较大的分部分项工程安全管理办法》，由专业承包单位编制合格且不需要专家论证的专项施工方案，经（）签字后报监理单位总监理工程师审核签字后实施。 ["A.建设单位项目负责人和专业承包单位项目负责人 ","B.总承包单位项目负责人和项目技术负责人 ","C.总承包单位技术负责人和专业承包单位技术负责人 ","D.总承包单位项目技术负责人和专业承包单位项目负责人"]
将债券利息在发行时先行返回给投资者的债券是（） ["附息债券","贴现债券","零息债券","累进利息债券"]
立地主导因子
One of your customers has decided to deploy location-based services in addition to existingwireless services. The customer requires that the additional access points to be deployed in monitor-onlymode. The most likely reason for this requirement is that the customer has which of these existingwireless devices？（） ["Data Collection","802.11b\/g VoIP","802.11b and g clients","RFID tag"]
回购市场上主要需求者包括：（）。 ["证券公司","政府证券交易商","大型企业","大银行","信托投资公司"]
什么是森林？森林有什么特点？
